#iot-div1{width: 100%;background-color: red;aspect-ratio: 8/1;position: fixed;top: -1%;}
#iot-div1-1{color: aliceblue;text-align: center;position:relative;padding-top: 0.2rem}
#iot-title1{width: 100%;background-color: red;aspect-ratio: 8/1;position: fixed;top: -1%;}
#iot-title2{color: aliceblue;text-align: center;position:relative;padding-top: 0.2rem}
